Structure 35 0226 · San Mateo County, CA

Interstate 380 over Cherry Avenue

Carries Interstate 380 over Cherry Avenue, 04-sm-380-t4.98-sbr.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT135 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 7/9

135 ft end to end, longest span 70 ft. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.

Built1971rebuilt 1973
Length135.2 ft41.2 m
Daily traffic122,000counted 2009
Last inspectedFebruary 2024every 24 months

Location

StateCalifornia
CountySan Mateo
Location04-sm-380-t4.98-sbr
CarriesInterstate 380
CrossesCherry Avenue
Coordinates37.62930, -122.42659

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length135.2 ft (41.2 m)
Max Span70.2 ft (21.4 m)
Deck Width232.9 ft (71 m)
Deck Area2925.2 sq m
Main Spans2
Year Built1971 (reconstructed 1973)

Traffic

Avg Daily Traffic122,000 (2009)
Truck Traffic3%
Lanes On Bridge7
Lanes Under Bridge4

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number35 0226

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

Nearby Bridges